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An undergraduate University of Alberta paleontology student has discovered an Ornithomimus dinosaur with preserved tail feathers and soft tissue. The discovery is shedding light on the convergent evolution of these dinosaurs with ostriches and emus relating to thermoregulation and is also tightening the linkages between dinosaurs and modern birds.
originally posted by: darkbake
a reply to: TerryDon79
I think this is just another confirmation of that, although this is the first time I have heard of a feathered dinosaur fossil being found, they have apparently been found in the past. I had always thought that they had not found any of them before until I read this article.
originally posted by: Bone75
My ex-girlfriend likes to wear feathers in her hair, for the sake of future evolutionists everywhere... I sure hope she doesn't fall into a tar pit.
We find that in the lineage leading to birds, the observed increase in the diversity of melanosome morphologies appears abruptly, near the origin of pinnate feathers in maniraptoran dinosaurs. Similarly, mammals show an increased diversity of melanosome form compared to all ectothermic amniotes. In these two clades, mammals and maniraptoran dinosaurs including birds, melanosome form and colour are linked and colour reconstruction may be possible. By contrast, melanosomes in lizard, turtle and crocodilian skin, as well as the archosaurian filamentous body coverings (dinosaur ‘protofeathers’ and pterosaur ‘pycnofibres’), show a limited diversity of form that is uncorrelated with colour in extant taxa.
Middle Jurassic to Early Cretaceous deposits from northeastern China have yielded varied theropod dinosaurs bearing feathers. Filamentous integumentary structures have also been described in ornithischian dinosaurs, but whether these filaments can be regarded as part of the evolutionary lineage toward feathers remains controversial. Here we describe a new basal neornithischian dinosaur from the Jurassic of Siberia with small scales around the distal hindlimb, larger imbricated scales around the tail, monofilaments around the head and the thorax, and more complex featherlike structures around the humerus, the femur, and the tibia. The discovery of these branched integumentary structures outside theropods suggests that featherlike structures coexisted with scales and were potentially widespread among the entire dinosaur clade; feathers may thus have been present in the earliest dinosaurs.
After nearly one and half century of study and debate on whether extant birds are descendants of dinosaurs, paleontologists now generally agree that all birds are derived from a group of small-sized theropods (a suborder of bipedal saurischian or ‘lizard-hipped’ dinosaurs). In the past two decades, paleontology has also made remarkable progress in understanding of the origin and early evolution of bird feathers. Since the first report of proto-feathers from the theropod dinosaur Sinosauropteryx , diverse types of feathers in dinosaurs, including theropods and ornithischians, (one of the two basic divisions of dinosaurs, the ‘bird-hipped’ dinosaurs) have been reported mainly from the Early Cretaceous (about 120 million years ago) but also Middle-Late Jurassic (about 160 million years ago) deposits in northeastern China that have tremendously improved our understanding of the evolutionary transition from dinosaur to bird
The first feathers that evolved in early dinosaurs had a simple hairlike structure and probably served to insulate the body. How did these simple protofeathers evolve into the more complex feathers found in today's birds? In a Perspective, Koschowitz et al. argue that dinosaur color vision played a key role in this evolution. Dinosaur color vision, like that of birds, is likely to have been superior to that of humans. The evolution of complex feathers would have enabled color signaling; for example, during sexual selection.
originally posted by: Bone75
But then they would think they discovered a new species due to my freakishly large penis. do i pck for worms then o never mind